How do you like to save your data and how much customizability do you like/need?

[Eben60]

The post cited below was written a few years ago, and in the meanwhile there are also other options, but these listed are presumably still valid. Among the listed formats, HDF5 has the advantage of being supported by many specialized softwares (e.g. I know it is supported by Origin and Igor Pro).

Recommended serialization interface in Oct 2020: JLD, JLD2,

Sometimes its good to have an open community building a ton of alternatives, sometimes it’s not as good. I think this is a place where it hasn’t turned out so good and someone needs to sit down and consolidate it. The summary right now is: Julia’s serialization is the best, but cannot necessarily cross versions. HDF5 is stable and won’t change, but that means it supports the basics (arrays and such), and that’s pretty much what it will do. JLD2 is great and got new maintainers. That might mean…